SiteScout — Website Diagnostic Inspector

SiteScout is a one-click website inspector for web developers, hosting providers, freelancers, SEOs and site owners. Open any website, click the SiteScout icon, and get a compact health report in a couple of seconds. No account, no setup, no API keys. WHAT YOU GET ▸ Hosting & server: server software, CDN (Cloudflare, Fastly, CloudFront, Akamai and more), HTTP version (HTTP/1.1, HTTP/2, HTTP/3), cache headers and reverse DNS of the server IP. ▸ SSL certificate: issuer, valid-from and expiry dates, days remaining and the names the certificate covers, from public Certificate Transparency logs. Certificates close to expiry are flagged. ▸ DNS records: A, AAAA, CNAME, MX, NS, TXT and CAA records via Cloudflare's 1.1.1.1 DNS-over-HTTPS resolver. ▸ Email deliverability (graded A–F): checks SPF, DMARC policy and MX records on the domain that actually sends mail, and warns you when DMARC is monitor-only and doesn't block spoofing. ▸ Security headers (graded A–F): HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy and Cross-Origin-Opener-Policy, with the exact values the site sends. ▸ Performance (graded A–F): time to first byte, first contentful paint, DOM ready, full page load, total transfer size and request count, read from the browser's own timing data. ▸ Domain & WHOIS: registrar, registration date, expiry date, domain age and status codes via RDAP, the official successor to WHOIS. Every section loads on its own, so one slow lookup never holds up the rest. Click any card to expand the full details, and re-scan at any time. WHO IT'S FOR • Hosting and support teams triaging "my site is down" or "my email goes to spam" tickets • Freelancers and agencies auditing a client's site before quoting • SEOs and marketers checking technical basics • Developers verifying a deployment, CDN switch or DNS change PRIVACY FIRST • Runs only when you click the icon. Never in the background, never on pages automatically. • No account, no analytics, no tracking, no ads, and no server of our own. • Nothing is stored. Results disappear when you close the popup. • Only the domain name of the site you inspect is sent to public lookup services: Cloudflare DNS, Cert Spotter / crt.sh Certificate Transparency search, and RDAP. IP addresses, localhost and internal hostnames are never sent to them. • Minimal permissions: activeTab and scripting, plus access to those four lookup services only. Privacy policy: https://shahidmalla.com/privacy/sitescout Built by Shahid Malla · https://shahidmalla.com